JP2008002056A - Method for producing moisture-permeable waterproof fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a moisture-permeable waterproof fabric which gives dull feeling and excels in tearing strength irrespective of thin fabric. <P>SOLUTION: The method for producing the moisture-permeable waterproof fabric having a thickness of ≤0.15 mm and a tear strengths of ≥10 N in a warp tear direction and in a weft tear direction comprises (i) a process for vacuum heating solid polyamide resin chips containing a titanium oxide in an amount of ≥1 wt.% and having a relative viscosity of ≤2.7 to form the chips having a relative viscosity of ≥2.8 and then spinning the chips by a one step spinning method to produce a multifilament yarn having a total fineness of 30 to 45 dtex and a single filament fineness of 0.5 to 1.5 dtex, (ii) a process for weaving a base fabric composed of a lipstop construction, and (iii) a process for providing at least one resin layer on the fabric. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for producing a moisture-permeable and waterproof fabric made of a thin base fabric having a dull feeling and excellent in tearing strength.

  In recent years, fabrics that have moisture permeability, water resistance, water repellency, and are light and flexible have become more demanding as comfort and health concerns increase, especially in clothing and lifestyle materials. It has become to. Conventionally, as a method for realizing such a demand, for example, a method of laminating a polymer film on a fabric made of bulky yarn obtained from nylon 66 multifilament has been generally used, and the moisture permeability / Fabrics having a waterproof / water-repellent function are often used for dust-removable clothing and the like by utilizing sports clothing such as a windbreaker and its high degree of dust removal and low dust generation. Such a waterproof fabric having a waterproof and moisture-permeable urethane resin film on the back surface of nylon or polyester fabric has a defect that the tear strength of the fabric is low although it is excellent in moisture permeability and waterproof properties. This is thought to be because the resin penetrates into the fabric structure of the fabric, and this restrains the fiber and significantly reduces the degree of freedom of the fiber, so that the texture of the resulting fabric is cured and its tear strength is reduced. Yes. This problem of texture hardening and tear strength reduction is extremely difficult to avoid even if a soft resin such as urethane is used. As a measure for increasing the tear strength, generally, a multifilament of 70 dtex or more is used.

Although measures are taken to interweave high-elastic yarns such as aramid fibers, the difference in shrinkage between high-elastic yarns and nylon yarns or polyester yarns is too great, so that the fabric is uneven particularly after dyeing and heat treatment. Thus, even when a urethane film having moisture permeability and waterproof properties was laminated in this state, the adhesion between the fabric and the urethane film was poor, and the urethane film was easily peeled off.
Furthermore, among high-elasticity yarns woven with nylon and polyester yarns, high-elasticity yarns that are woven in a lattice shape in the vertical and horizontal directions are especially high-elasticity warp and horizontal yarns after dyeing and heat treatment. The thickness of the intersection becomes thick, and even after the urethane film is laminated, the intersection is in the most protruding state. For this reason, when the fabric is washed, the protruding portion is easily worn, and in the water resistance test after washing, the worn portion is easily broken, so that only a fabric with low water resistance can be obtained. Therefore, in order to improve the water resistance by this processing method, means such as making the urethane film very thick was used, so that there was a disadvantage that the fabric became thick and heavy.

As a countermeasure, it consists of a yarn containing a low-shrinkage organic yarn A and a high-elastic yarn B. The high-elastic yarn B is intermittently woven in the vertical and / or horizontal directions so that the high elastic yarn B is 10% or less of the weight of the fabric. However, a waterproof fabric that is flat and has no slack in the high elastic yarn B has been proposed. However, since the high elastic yarn, in particular, a high elastic yarn having a large fineness, is used, the fabric becomes thicker and the texture becomes harder or the dyeing property is increased. Due to the difference, the design is inferior and it was not preferable as clothing (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 6-220779 (Claims etc.)

  An object of the present invention is to provide a method for producing a moisture-permeable and waterproof fabric having a dull feeling and excellent tear strength despite being thin.

As a result of diligent studies to achieve the above object, the present inventors have improved the relative viscosity of the multifilament polymer constituting the base fabric, the content of inorganic fine particles, the single yarn fineness, the multifilament fineness, and the fabric structure. Thus, the present invention has reached an invention relating to a method for producing a moisture-permeable and waterproof fabric that satisfies the tearing strength even when a resin is applied to a thin base fabric. That is, the present invention
1. A method for producing a moisture-permeable waterproof fabric having a thickness of 0.15 mm or less and a tear strength in the warp tear direction and the weft tear direction of 10 N or more,
The step of producing a moisture-permeable and waterproof fabric includes (i) a solid polyamide resin chip containing 1 wt% or more of titanium oxide and having a relative viscosity of 2.7 or less by heating under reduced pressure to a relative viscosity of 2.8 or more. A step of producing a multifilament yarn having a total fineness of 30 to 45 dtex and a single yarn fineness of 0.5 to 1.5 dtex by a step spinning method, (ii) a step of weaving a woven fabric comprising a ripstop structure, (iii) And a step of providing at least one resin layer on the woven fabric.
2. The moisture-permeable waterproof fabric according to the first aspect of the invention is characterized in that the number of inserted yarns in the warp direction and weft direction plural yarn insertion portions is 20 to 80 / 2.54 cm or more, respectively. It is a manufacturing method.
3. In the first or second invention, the total of the warp and weft cover factors of the woven base fabric is 1500 to 2200, and the ratio thereof (warp / weft) is 45:55 to 60:40. It is a manufacturing method of the moisture-permeable waterproof fabric of description.
4). Any one of the first to third inventions characterized in that the resin layer is a porous film, and the moisture permeability is a fabric of 6000 g / m ² · 24 hrs or more by the A-1 method and the water pressure resistance is 60 kPa or more. It is a manufacturing method of the moisture-permeable waterproof fabric of description.
5. Any one of the first to third inventions characterized in that the resin layer is a nonporous membrane, the moisture permeability is a fabric of 18000 g / m ² · 24 hrs or more by the B-1 method, and the water pressure resistance is 100 kPa or more. A method for producing a moisture-permeable and waterproof fabric as described in 1. above.

  According to the present invention, by appropriately adjusting the relative viscosity of the fibers constituting the fabric base fabric and the content of inorganic fine particles, the single yarn fineness, the multifilament fineness, and the texture of the fabric, the fabric has a dull feeling and is thin. In spite of this, it has become possible to provide a moisture-permeable and waterproof fabric excellent in tearing strength.

Hereinafter, the present invention will be described in detail.
The moisture-permeable and waterproof fabric of the present invention is a moisture-permeable and waterproof fabric in which a resin layer selected from at least one polyurethane polymer is provided on a fabric base fabric formed from synthetic filament yarns.

  The synthetic filament yarn referred to in the present invention is composed of a filament yarn made of polyester such as polyethylene terephthalate, polytrimethylene terephthalate, polytetramethylene terephthalate, or a polyamide such as aliphatic polyamide or aromatic polyamide, such as nylon 6 or nylon 66. It means a filament yarn, or a filament yarn made of a synthetic resin such as a filament yarn made of polyolefin such as polyethylene or polypropylene, or an acrylic or acrylate filament yarn. Nylon filaments, particularly nylon 6, are preferably employed from the texture and tear strength of the fabric. In the case of polyester, other third component may be copolymerized within a range that does not impair the object of the present invention. Specifically, dicarboxylic acids such as adipic acid, oxalic acid, sebacic acid, isophthalic acid, 5-sodiumsulfoisophthalic acid, glycols such as diethylene glycol and polyethylene glycol, bisphenol A or its ethylene oxide adduct, hydroxybenzoic acid, etc. These oxycarboxylic acids can be used alone or in combination of two or more. Further, additives such as matting agents, antioxidants, fluorescent brighteners, ultraviolet absorbers, antistatic agents, flame retardants and the like may be blended within the range not impairing the object of the present invention.

  The inorganic fine particles contained in the synthetic filament yarn are not particularly limited, and any inorganic fine particles can be used. The type of inorganic fine particles to be added differs depending on the target fiber. For example, when the purpose is to obtain an ultraviolet shielding fiber, fine particles that reflect or absorb ultraviolet rays, that is, fine particles that do not substantially transmit ultraviolet rays are used. It is done. Typical examples include inorganic compounds such as titanium dioxide, zinc oxide, magnesium oxide, alumina, silicon dioxide, barium sulfate, calcium carbonate, sodium carbonate, talc and kaolin, and various treated fine particles of inorganic compounds. 1 type or 2 types or more can be mixed and used. More preferred are titanium dioxide, zinc oxide, and alumina. Particularly preferred is titanium dioxide. The added amount is desirably 1 wt% or more in order to obtain a dull feeling on the surface, and more preferably 2 wt% or more. However, if it exceeds 5 wt%, the spinning operability is significantly deteriorated, and the strength of the fiber is increased. From the viewpoint of lowering, 4 wt% or less is preferable. In addition to this, for example, an inorganic pigment is used as the inorganic fine particles in order to obtain a vividly colored fiber. Furthermore, when the purpose is to obtain conductive fibers, conductive metal oxides or metal powders are used as inorganic fine particles, and when the purpose is to obtain magnetic fibers, iron, cobalt, nickel, etc. These metals and their magnetic powders such as oxides or ferrite are used as inorganic fine particles. The content of the inorganic additive is determined according to JIS L 1013 (8.25 ash), but when the inorganic additive is titanium oxide, it is measured according to JIS L 1013 (8.26 titanium oxide). You can also. The average particle size of the inorganic fine particles is preferably 5 μ or less, particularly preferably 1 μ or less. If the particle diameter is too large, problems such as clogging in the filter during spinning and yarn breakage occur, and yarn breakage also occurs during drawing. The average particle size referred to here is a value measured using a particle size distribution measuring apparatus (CAPA-500) manufactured by Horiba. The shape of the inorganic fine particles can be used without limitation, such as polygonal, needle-like, spherical, cubic, spindle-like, and plate-like, but those that are spherical or spindle-like in terms of dispersibility and wear resistance Is preferred.

  The fineness of the filament yarn constituting the woven fabric is preferably 50 dtex or less. If it exceeds 50 dtex, the fabric becomes thick and there is no difference from the conventional one, so it is out of the scope of the present invention. From the texture and lightness of the fabric, it is preferably 45 dtex or less, and more preferably 40 dtex or less. Thereby, the thickness of a moisture-permeable waterproof fabric can be 0.15 mm or less. A preferable thickness range is 0.13 mm or less in terms of lightness and softness. Since the single yarn fineness greatly affects the texture, it is preferably 1.5 dtex or less, more preferably 1.0 dtex or less. The cross-sectional shape may be any shape such as a polygon such as a circle, a triangle or a square, a flat shape, a hollow shape, a star, or a gear shape, and is not particularly limited in the present invention.

  The resin used for at least one resin layer constituting the moisture-permeable and waterproof fabric is a resin based on polyurethane, acrylic, polyester, polyamide, silicone, fluorine polymer, etc. alone, or these It is also possible to mix and use one or more kinds of inorganic fine particles, organic fine particles, particularly fine particles having high moisture absorption and moisture absorption exothermic properties.

  It is desirable that the tearing strength of the moisture permeable waterproof fabric is 5 N or more in both the warp tear direction and the weft tear direction. If the tear strength is less than 5N, tearing is likely to occur particularly at the site where elasticity such as the elbow is required during wearing. Therefore, the tear strength is preferably 7N or more, more preferably 10N or more. If the thickness of the fabric is increased, that is, if the fineness of the constituent fibers is increased, the tearing strength can be improved. However, since it becomes thicker, the fineness of the fibers used is preferably 50 decitex or less. The higher the tear strength, the better. However, if it exceeds about 30 N, the spinning operability tends to be inferior, and it is difficult to produce stably, which is not preferable.

  The relative viscosity of the polyamide filament is preferably 2.8 or more. In the present invention, it is clarified that it is important to increase the molecular weight of the filament, in other words, the relative viscosity, rather than the texture of the fabric base fabric in order to make the fabric in which the tearing strength does not significantly decrease even when the resin layer is applied. did. A more preferable range is 3.0 or more, but it is more preferably less than 5.0, more preferably less than 4.0 in view of spinnability.

  The fabric base fabric constituting the moisture-permeable and waterproof fabric of the present invention is preferably a fabric having a ripstop structure such as a single lip or a double lip. The ripstop structure in which thick yarns and aligned yarns are arranged at intervals of several millimeters is resistant to tearing, and is especially used in fields that require light tearing, such as paragliders. It is preferable that the top structure has at least 6 / 2.54 cm or more of multi-thread insertion parts in which two to three ground yarns are aligned at the same opening in the weft direction, particularly 2.54 cm (= 1 inch). It is preferable that the number of yarn insertions obtained by multiplying the number of the multi-thread insertion portions by the number of yarns aligned in a single multi-thread insertion portion is 20 or more. If the number of yarns aligned at the same port becomes 4 or more, the aligned yarns tend to overlap each other, resulting in a level difference (unevenness) between the textured portion, and insertion of multiple yarns after resin coating treatment This is not preferable because the resin film on the part becomes thin and is inferior in durability or easily peeled off. If the number of inserted yarns obtained by multiplying the number of multi-thread inserting portions between 2.54 cm and the number of aligned yarns is less than 20, it is not preferable because the tearing strength becomes difficult to satisfy 5N. On the other hand, if it exceeds 80, the texture of the fabric becomes hard, which is not preferable. More preferably, they are 25 or more and 70 or less, More preferably, they are 30 or more and 60 or less.

In the present invention, it has been found that when the fiber strength is the same, the tear strength increases as the density of the base fabric increases and the cover factor increases. In order to balance the tear strength in the warp tear direction and the weft tear direction, the ratio of the cover factor between the warp and the weft of the fabric base fabric constituting the moisture-permeable waterproof fabric is preferably 45:55 to 60:40. . When the cover factor ratio of the warp is lower than 45%, the operability during weaving deteriorates, and the strength in the warp tearing direction tends to be less than 5N, and when it exceeds 60%, the strength in the weft tearing direction tends to be less than 5N. More preferably, it is 47: 53-55: 45, and 50: 50-53: 47 is still more preferable. The cover factor (CF) is a coefficient representing the ratio of the cross section of the yarn between the unit areas, and is represented by the formula: {yarn fineness (decitex)} ^1/2 × {woven fabric density (pieces / 2.54 cm) }, When the cover factor value is high, the gap is small, that is, the denseness is high.

The total cover factor of the warp and the weft is preferably 1500 to 2200, more preferably 1550 to 2150, and more preferably 1600 to 2100.
When the resin layer constituting the moisture-permeable and waterproof fabric of the present invention is a porous membrane type, the moisture permeability of the moisture-permeable and waterproof fabric is 6000 g / m ² · according to the measurement method of JIS L-1099 (A-1 method). It is preferably 24 hours or more, and the water pressure resistance is preferably 60 kPa or more according to the measurement method of JIS L-1092. (Method A-1) If the moisture permeability is less than 6000 g / m ² · 24 hr, a feeling of sultry will be felt when worn in the summer, and if the water pressure resistance is 60 kPa or less, sufficient waterproof performance cannot be obtained, and in the rain Water leakage may occur during clothing, which is not preferable. More preferably (A-1 method) moisture permeability 7000g ^/ m 2 · 24hr or more, but even more preferably at least 8000g ^/ m 2 · 24hr, since the excessively high water pressure resistance tends to decrease, 15000 g / m ^It is preferably ² · 24 hr or less, more preferably 14000 g / m ² · 24 hr or less. Further, if the water pressure resistance is too high, the moisture permeability tends to be lowered. Therefore, the preferable range is from 70 kPa to 160 kPa, and more preferably from 80 kPa to 140 kPa.

When the resin layer constituting the moisture-permeable waterproof fabric of the present invention is a nonporous membrane type, the moisture permeability is 18,000 g / m ² · 24 hr or more according to the measurement method of JIS L-1099 (B-1 method). In addition, the water pressure resistance must be at least 60 kPa as measured by JIS L-1092. (Method B-1) If the moisture permeability is less than 18,000 g / m ² · 24 hr, a feeling of stuffiness will be felt when worn in winter, and if the water pressure resistance is 100 kPa or less, sufficient waterproof performance cannot be obtained. , Water may leak during clothing in the rain. Preferably (B-1 method) moisture permeability 20000g ^/ m 2 · 24hr or more, but even more preferably at least 22000g ^/ m 2 · 24hr, since the excessively high water pressure resistance tends to decrease, the upper limit is 60 000 g / m ² · 24 hr or less, more preferably 40000 g / m ² · 24 hr or less. In addition, if the water pressure is too high, the moisture permeability tends to decrease, so a preferable range is from 120 kPa to 250 kPa, and more preferably from 150 kPa to 210 kPa.

  The method for producing the moisture-permeable and waterproof fabric of the present invention is not particularly limited. However, as a preferred embodiment, a solid polyamide resin chip containing 1 wt% or more of titanium oxide and having a relative viscosity of 2.7 or less is heated under reduced pressure. A multifilament having a viscosity of 2.8 or more, a total fineness of 30 to 50 dtex and a single yarn fineness of 0.5 to 1.5 dtex is obtained by a one-step spinning method, and a resin layer is applied after forming a high-density fabric. Can be mentioned. It is also preferable to devise to increase the water pressure resistance by calendering one or both times once or a plurality of times before applying the resin layer. It is possible to increase the degree of polymerization by heating a polyamide resin containing 1 wt% or more of titanium oxide under reduced pressure in a molten state, but not only the melt viscosity becomes too high, but clogging in pipes is likely to occur. A high viscosity exceeding 2.7 is not preferable because segregation of titanium oxide is likely to occur and the quality is not stable. Increasing the degree of polymer polymerization by solid phase polymerization is a means of minimizing these problems. The spinning method can be manufactured by both a two-step method comprising a spinning step and a drawing step, and a one-step method such as a continuous spinning method and an ultra-high speed spinning method, but contains a large amount of titanium oxide. Since the fibers to be worn will be worn by friction with the guide or the like, it is better to simplify the spinning process as much as possible. Furthermore, in the two-step spinning method with a slow drawing speed, drawing strain is likely to occur partially, for example, there is a problem that the strain is concentrated in a portion where the presence ratio of titanium oxide is large and yarn breakage is likely to occur. Therefore, the one-step spinning method is preferably employed.

  Hereinafter, the present invention will be described with reference to specific examples, but the present invention is not limited thereto. In addition, each characteristic value in an Example was measured with the following method.

  Content of inorganic fine particles: Measured according to JIS L 1013.

  Fineness: Measured according to JIS L 1013.

  Tear strength: Measured according to the pendulum method described in JIS L-1096.

Relative viscosity: The sample solution was prepared by dissolving the sample in 96.3 ± 0.1 wt% reagent-grade concentrated sulfuric acid so that the polymer concentration was 10 mg / ml, and water at a temperature of 20 ° C. ± 0.05 ° C. The solution relative viscosity is measured using an Ostwald viscometer with a drop time of 6 to 7 seconds. In the measurement, using the same viscometer, the relative viscosity RV is calculated from the ratio of the drop time T0 (second) of 20 ml of sulfuric acid and the drop time T1 (second) of 20 ml of the sample solution, which is the same as when the sample solution is adjusted, by Use to calculate.
RV = T1 / T0

Moisture permeability:
(A-1): Measured according to JIS L-1099 (A-1 method).
(B-1): Measured according to JIS L-1099 (B-1 method).

  Water pressure resistance: Measured according to JIS L-1092.

  Fabric thickness: The thickness of the moisture-permeable and waterproof fabric was measured according to the thickness of JIS L-1096.

  Glossiness: Judged visually.

(Example 1)
A nylon 6 resin having a relative viscosity of 2.5 containing 2% by weight of titanium oxide is adjusted to a relative viscosity of 3.1 by solid-phase polymerization by heating under reduced pressure, and a strength of 4.7 dN / dtex by a conventional continuous spinning method. A 44 dtex, 34 filament nylon 6 fiber having an elongation of 46% and a boiling water shrinkage of 11.5% was obtained. The fibers were used for warps and wefts, woven with a mini lip structure (FIG. 1), dyed by a conventional method, calendered, and then finished. The cover factor ratio of the obtained fabric was 51:49, and the number of insertions was 43 warps and 41 wefts. The fabric was impregnated with a 6% solution of Asahi Guard AG710 (water repellent manufactured by Asahi Glass Co., Ltd.), squeezed with mangle, dried, and then heat treated at 160 ° C. for 30 seconds. The following resin was applied to this fabric with a knife coater, guided into water, allowed to solidify for 2 minutes, washed with hot water at 55 ° C. for 8 minutes, and dried. The following resin composition was blended for the porous membrane.
Silicon oxide-containing ester polyurethane resin 75 parts Ether polyurethane resin 35 parts N, N'-dimethylformamide 80 parts HU-720P (Hygroscopic fine particles: manufactured by Nippon Exlan Industries Co., Ltd.) 10 parts Coronate HL 3 parts The fabric surface of the fabric had a dull feeling and was a moisture-permeable and waterproof fabric excellent in tearing strength despite being thin. Each physical property is shown in Table 1.

(Example 2)
The resin component constituting the fiber was changed to nylon 66, and after weaving with a double lip structure (FIG. 2), it was applied in the same manner as in Example 1 except that the following resin film was formed by a dry method. Created.
Film forming conditions: After applying a known dyeing finish to the base fabric, the fabric was impregnated with a 6% solution of Asahi Guard AG710 (Asahi Glass Co., Ltd. water repellent), squeezed with mangle, dried, and then at 160 ° C. Heat treated for 30 seconds. On the other hand, the following resin was coated on a release paper with a knife coater and dried at 100 ° C. using an air oven to obtain a nonporous film. A resin film was applied to the fabric using an adhesive resin by a laminating method.
Water-swellable ester-based polyurethane resin 75 parts Water-swellable ether-based polyurethane resin 35 parts N, N'-dimethylformamide 80 parts HU-720P (hygroscopic fine particles: manufactured by Nippon Exlan Industries Co., Ltd.) 10 parts Coronate HL 3 parts The obtained fabric had a dull feeling and was a moisture-permeable and waterproof fabric excellent in tearing strength despite being thin. Each physical property is shown in Table 1.

(Comparative Example 1)
A nylon 6 resin having a relative viscosity of 2.5 was prepared by a continuous spinning method of 78T34 filaments, and Example 1 was followed except that the cover factor ratio was 56:44. The obtained fabric had a dull feeling and was a moisture-permeable waterproof fabric excellent in tear strength, but the tear strength balance in the warp direction and the weft direction was poor, and the thickness was as thick as 0.22 mm. Each physical property is shown in Table 1.

(Comparative Example 2)
Example 1 was followed except that a nylon 6 resin having a relative viscosity of 2.5 was prepared by a known one-step spinning method. The obtained fabric was thin and had a dull feeling, but was a moisture-permeable waterproof fabric with poor tearing strength. Each physical property is shown in Table 1.

(Comparative Example 3)
A nylon 6 resin containing 0.3 wt% of titanium oxide was prepared in accordance with Example 2 except that 56T34 filaments were prepared by a known one-step spinning method, and a plain fabric (FIG. 3) was woven. The obtained fabric did not have a dull feeling and was a slightly thick and moisture-permeable waterproof fabric that was inferior in tearing strength. Each physical property is shown in Table 1.

  According to the present invention, by appropriately adjusting the relative viscosity of the polyamide constituting the fibers of the fabric base fabric and the content of inorganic fine particles, the single yarn fineness, the multifilament fineness, and the fabric structure, the fabric has a dull feeling. Thus, it has become possible to provide a method for producing a moisture-permeable and waterproof fabric excellent in tearing strength despite being thin. The moisture-permeable and waterproof fabric obtained in the present invention can be suitably used for sports clothing applications such as windbreakers.

It is an organization chart showing the mini lip organization which is one mode of a ripstop organization. It is an organization chart showing the double lip structure which is another mode of a ripstop organization. It is an organization chart showing a plain organization.

Claims (5)

A method for producing a moisture-permeable waterproof fabric having a thickness of 0.15 mm or less and a tear strength in the warp tear direction and the weft tear direction of 10 N or more,
The step of producing a moisture-permeable and waterproof fabric includes (i) a solid polyamide resin chip containing 1 wt% or more of titanium oxide and having a relative viscosity of 2.7 or less by heating under reduced pressure to a relative viscosity of 2.8 or more. A step of producing a multifilament yarn having a total fineness of 30 to 45 dtex and a single yarn fineness of 0.5 to 1.5 dtex by a step spinning method, (ii) a step of weaving a woven fabric comprising a ripstop structure, (iii) And a step of forming at least one resin layer on the woven fabric.   The method for producing a moisture-permeable and waterproof fabric according to claim 1, wherein the number of inserted yarns in the warp direction and the weft direction of the plurality of yarn insertion portions is 20 to 80 pieces / 2.54 cm or more, respectively. .   The sum of the cover factors of the warp and weft of the woven fabric is 1500 to 2200, and the ratio thereof (warp / weft) is 45:55 to 60:40. Of manufacturing a moisture-permeable and waterproof fabric. The resin layer is a porous membrane, and is a fabric having a water vapor permeability of 6000 g / m ² · 24 hrs or more and a water pressure resistance of 60 kPa or more according to the A-1 method. Of manufacturing a moisture-permeable and waterproof fabric. The resin layer is a non-porous membrane, and is a fabric having a moisture permeability of 18000 g / m ² · 24 hrs or more by the B-1 method and a water pressure resistance of 100 kPa or more. The manufacturing method of the moisture-permeable waterproof fabric of description.

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